基于Landsat的合肥市城市扩张研究

发布时间：2018-05-01 23:38

本文选题：城市扩张 + 遥感　；参考：《浙江大学学报(理学版)》2017年06期

【摘要】：城市扩张及其驱动力分析在协调城市扩张与土地资源保护的矛盾、促进城市可持续发展中具有重要作用.以合肥市1996,1999,2002,2005,2008,2011,2014年Landsat影像为数据源,采用监督分类方法获取合肥市城市用地时空分布定量信息,从城市面积变化、形态变化和重心迁移3个方面分析合肥市城市扩张情况,并结合自然环境、经济发展、人口增长、交通建设、政府行为等影响因子对合肥市城市发展的驱动力进行分析.结果表明:1996～2014年合肥市城市用地面积扩张286.09km~2,扩张率为394.7%,扩张速度为15.89km~2·a~(-1).近20a来,合肥市在外形上逐渐趋于狭长,以向西南扩张为主,并呈现以交通线为主的星形扩张,城区扩张亦十分明显.驱动力分析得出合肥市扩张的主要影响因子为人口增长与经济发展.
[Abstract]:Urban expansion and its driving force analysis play an important role in coordinating the contradiction between urban expansion and land resources protection and promoting the sustainable development of cities. Based on the data sources of Landsat images in Hefei in 1996 / 1999 / 2005 and 2014, quantitative information of temporal and spatial distribution of urban land in Hefei was obtained by means of supervised classification method. The urban expansion of Hefei was analyzed from three aspects: urban area change, shape change and center of gravity migration. Combined with natural environment, economic development, population growth, traffic construction, government behavior and other factors, the driving force of Hefei urban development is analyzed. The results show that the area of urban land in Hefei is 286.09 km ~ (-2) from 1996 to 2014, the rate of expansion is 394.7, and the rate of expansion is 15.89km~2. In the past 20 years, the shape of Hefei has gradually tended to be narrow and narrow, mainly to the southwest, and to the main traffic line star expansion, urban expansion is also very obvious. The driving force analysis shows that the main influencing factors of Hefei expansion are population growth and economic development.
【作者单位】：河海大学地球科学与工程学院;安徽大学资源与环境工程学院;
【基金】：“十三五”国家重点研发计划项目(2016YFA0601500) 中央高校基本科研业务费专项资金资助项目(2016B05414)
【分类号】：F299.27;P237

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